textproduct: Rapid City

KEY MESSAGES

-Mild, mainly dry, and breezy at times through the rest of the week

DISCUSSION

(This Afternoon Through Monday) Issued at 1036 AM MDT Tue Oct 27 2026

Mean upper troughing over the PAC NW and western Canada will support general SW flow through the remainder week with weak impulses traversing the flow. Expect mainly dry weather weather as these systems fight very dry low levels, although a few sprinkles may be possible as each weak shortwave traverses the region. Dry air spreading into the region today, scouring out low level clouds and fog. Expect breezy winds with highs in the 50s and 60s. Weak impulse will traverse the region tonight and may support isolated rain or snow showers from northeast WY into NW SD. Mostly virga expected, but a couple showers may reach the ground. Otherwise, for the rest of the week highs will generally be in the 60s, with high temp potentials depending on the timing of the thermal ridges ahead each system. This could allow slightly warmer or cooler numbers than what the current forecast has. Upper trough will lift out the Pac NW early next week, with unsettled looking more likely coupled better chances for precip.

AVIATION

(For the 00Z TAFS Through 00Z Wednesday Evening) Issued At 510 PM MDT Tue Oct 27 2026

Scattered showers are possible across northeast Wyoming, the Black Hills, and northwestern South Dakota starting around 28/05z and lasting through 28/15z. Isolated MVFR conditions are possible in the heaviest precip. Patchy fog, leading to MVFR/IFR conditions, may redevelop over portions of the South Dakota plains this evening into the overnight hours before slowly burning off by 28/18z.

Outside of any showers and patchy fog, VFR conditions are expected through the TAF period.

UNR WATCHES/WARNINGS/ADVISORIES

SD...None. WY...None.